package com.ye.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ye.reggie.common.R;
import com.ye.reggie.pojo.Employee;
import com.ye.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     *  员工登录
     *
     * @author 叶旭晖
     * @date 2022/4/19 10:19
     * @return com.ye.reggie.common.R<com.ye.reggie.pojo.Employee>
     */
    @PostMapping("/login")
    public R<Employee> login(@RequestBody Employee employee, HttpServletRequest request){

        //1.将页面提交的密码password进行MD5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        log.info(password);
        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getPassword,password);
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败结果
        if(emp == null){
            return R.error("登录失败");
        }

        //4.密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5.查看员工状态，如果为禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6.登录成功，将员工id存入session并返回登录成功结果
        HttpSession session = request.getSession();
        session.setAttribute("employee",emp.getId());

        return R.success(emp);
    }
  /**
   *员工退出
   *
   * @author 叶旭晖
   * @date 2022/4/19 11:27
   * @param [request]
   * @return R<String>
   */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清除当前session中保存的员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     *  新增员工
     *
     * @author 叶旭晖
     * @date 2022/4/19 21:22
     * @param [employee]
     * @return R<String>
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){

        //设置初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户的id
        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     *  员工信息分页查询
     *
     * @author 叶旭晖
     * @date 2022/4/20 16:20
     * @param [page, pageSize, name]
     * @return R<Page>
     */
    @GetMapping("/page")
    public R<Page> page(Integer page,
                        Integer pageSize,
                        String name){
        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件
        lambdaQueryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);

        //添加排序条件
        lambdaQueryWrapper.orderByDesc(Employee::getUpdateTime);

        Page<Employee> employeePage = employeeService.page(pageInfo, lambdaQueryWrapper);

        return R.success(employeePage);
    }

    /**
     *  根据id修改员工信息
     *
     * @author 叶旭晖
     * @date 2022/4/20 16:58
     * @param [employee]
     * @return R<String>
     */
    @PutMapping
    public R<String> update(HttpServletRequest request ,@RequestBody Employee employee){
        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     *  根据id查询员工
     *
     * @author 叶旭晖
     * @date 2022/4/20 17:26
     * @param [id]
     * @return R<Employee>
     */

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }
}
